Princeton University Library is the main library system of Princeton University. With holdings of more than 7 million books, 6 million microforms, and 48,000 linear feet of manuscripts, it is among the largest libraries in the world by number of volumes. The main headquarters of the university system is the Harvey S. Firestone Memorial Library building, named after tire magnate Harvey Firestone. Additionally, Princeton is part of the Research Collections and Preservation Consortium (ReCAP) along with Columbia Libraries, Harvard Library and New York Public Library.